Pollination ofOphrys (Orchidaceae) in Cyprus

Paulus, H. F.; Gack, Claudia

doi:10.1007/bf00937674

Cited by 60 publications

(47 citation statements)

References 12 publications

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“…Another decoy example is strobilar thermogenesis in cycads, attracting insects for mating and brood sites (Tang, 1987b;Roemer et al, 2005). Decoys were variably and independently elaborated in early angiosperms, culminating in modern insect-mimicking pseudocopulation in orchids (Paulus & Gack, 1990), members of a lineage that originated by the latest Cretaceous (Ramirez et al, 2007).…”

Section: Plant Features Associated With Mandibulate Insect Pollinatorsmentioning

confidence: 99%

The Pollination of Mid Mesozoic Seed Plants and the Early History of Long-proboscid Insects^1,^2,³

Labandeira¹

2010

Annals of the Missouri Botanical Garden

119

126

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Section: Plant Features Associated With Mandibulate Insect Pollinatorsmentioning

confidence: 99%

The Pollination of Mid Mesozoic Seed Plants and the Early History of Long-proboscid Insects^1,^2,³

Labandeira¹

2010

Annals of the Missouri Botanical Garden

119

126

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“…Populations that have shifted to a different pollinator are often given species status, and are therefore not considered for studies of intraspecific variation. In the orchid genus Ophrys, for example, populations are often given species status on the sole criterion that they attract a distinct pollinator (Paulus and Glack 1990). This practice raises a difficult philosophical problem: should intraspecific taxa be maintained as examples of "incipient speciation" (e.g., Pellmyr 1986), or should species be recognized on the basis of diagnosibility alone?…”

Section: The Initial Hypothesis That Variation In Spur Length Among Pmentioning

confidence: 99%

Long-Tongued Fly Pollination and Evolution of Floral Spur Length in the Disa draconis Complex (Orchidaceae)

Johnson¹,

Steiner²

1997

Evolution

239

212

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JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact support@jstor.org.. Society for the Study of Evolution is collaborating with JSTOR to digitize, preserve and extend access to Evolution.Abstract.-Field studies in South Africa showed that floral spur length in the Disa draconis complex (Orchidaceae) varies enormously between populations in the southern mountains (means = 32-38 mm), lowland sandplain (mean -48 mm), and northern mountains (means = 57-72 mm). We tested the hypothesis that divergence in spur length has resulted from selection exerted through pollinator proboscis length. Short-spurred plants in several southern mountain populations, as well as long-spurred plants in one northern mountain population, were pollinated by a horsefly, Philoliche rostrata (Tabanidae), with a proboscis length that varied from 22 to 35 mm among sites. Longspurred plants on the sandplain were pollinated by the tanglewing fly, Moegistorynchus longirostris (Nemestrinidae), which has a very long proboscis (mean = 57 mm). Selection apparently favors long spurs in sandplain plants, as artificial shortening of spurs resulted in a significant decline in pollen receipt and fruit set, although pollinaria removal was not significantly affected. Fruit set in the study populations was limited by pollen availability, which further suggests that selection on spur length occurs mainly through the female component of reproductive success.

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“…Karyotype differences between Ophrys species are also lower than in other Mediterranean orchids ( Cozzolino et al, 2004 ). For several species, a hybridogenic origin has been proposed ( Paulus, 1988 ;Paulus and Gack, 1990b ). For several species, a hybridogenic origin has been proposed ( Paulus, 1988 ;Paulus and Gack, 1990b ).…”

mentioning

confidence: 97%

Scent variation and hybridization cause the displacement of a sexually deceptive orchid species

Stökl

Schlüter

Stuessy

et al. 2008

American J of Botany

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In the sexually deceptive orchid genus Ophrys, reproductive isolation is based on the specific attraction of males of a single pollinator species, mostly bees, by mimicking the female sex pheromone of this species. Changes in the floral odor can lead to hybridization, introgression, and possibly speciation. We investigated hybrid swarms of O. lupercalis and O. iricolor on Sardinia using behavioral, electrophysiological (GC-EAD), chemical, morphological, and genetic methods (AFLPs). In behavioral experiments, approximately 20% of the flowers from both species and hybrids were attractive to the "wrong" or both pollinator species. Analysis of the EAD-active hydrocarbons in the floral odor showed an overlap in the two species, whereby hybrid individuals could not be separated from O. iricolor. The genetic analysis confirmed the hybridization of the species. Plants of O. iricolor and hybrids are genetically indistinguishable and form an O. iricolor × lupercalis hybrid population. Remaining plants of O. lupercalis will possibly be displaced by the O. iricolor × lupercalis hybrid population in the future. Our study showed that in deceptive orchids, variation in the pollinator attracting cues, in this case, scent, can be the first step for speciation and at the same time cause the displacement of a species.

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Pollination ofOphrys (Orchidaceae) in Cyprus

Cited by 60 publications

References 12 publications

The Pollination of Mid Mesozoic Seed Plants and the Early History of Long-proboscid Insects^1,^2,³

The Pollination of Mid Mesozoic Seed Plants and the Early History of Long-proboscid Insects^1,^2,³

Long-Tongued Fly Pollination and Evolution of Floral Spur Length in the Disa draconis Complex (Orchidaceae)

Scent variation and hybridization cause the displacement of a sexually deceptive orchid species

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Pollination ofOphrys (Orchidaceae) in Cyprus

Cited by 60 publications

References 12 publications

The Pollination of Mid Mesozoic Seed Plants and the Early History of Long-proboscid Insects1,2,3

The Pollination of Mid Mesozoic Seed Plants and the Early History of Long-proboscid Insects1,2,3

Long-Tongued Fly Pollination and Evolution of Floral Spur Length in the Disa draconis Complex (Orchidaceae)

Scent variation and hybridization cause the displacement of a sexually deceptive orchid species

Contact Info

Product

Resources

About

The Pollination of Mid Mesozoic Seed Plants and the Early History of Long-proboscid Insects^1,^2,³

The Pollination of Mid Mesozoic Seed Plants and the Early History of Long-proboscid Insects^1,^2,³